女儿11岁,女儿到爸爸的年龄时,父女俩100岁,求父亲现在多少岁,三年级解答方法？ 父女共91岁，当父亲年龄是女儿现在年龄2倍时，女儿年龄是父亲...
\u7236\u4eb216\u5e74\u524d\u7684\u5e74\u9f84\u548c\u5973\u513f16\u5e74\u540e\u7684\u5e74\u9f84\u76f8\u540c\uff0c\u5f53\u7236\u5973\u4e24\u4eba\u7684\u5e74\u9f84\u548c\u662f100\u5c81\u65f6\uff0c\u7236\u4eb2\u591a\u5c11\u5c81\u7236\u4eb2\u6bd4\u5973\u513f\u592716\u00d72=32\uff08\u5c81\uff09
\u90a3\u4e48\u9898\u76ee\u5c31\u53ef\u4ee5\u8fd9\u6837\u89e3
100-(100-16\u00d72)\u00f72
=100-(100-32)\u00f72
=100-68\u00f72
=100-34
=66\uff08\u5c81\uff09
\u7b54\uff1a\u5f53\u7236\u5973\u4e24\u4eba\u7684\u5e74\u9f84\u548c\u662f100\u5c81\u65f6\uff0c\u7236\u4eb266\u5c81\u3002
\u8bbe\u5973\u513f\u73b0\u5728\u5e74\u9f84x\u5c81
\u5219\u7236\u4eb2\u73b0\u5728(91\u4e00x)\u5c81
a\u5e74\u540e\u7236\u4eb2\u5e74\u9f84\u4e3a2x\u5c81\uff0c\u5973\u513f\u5e74\u9f84\u4e3a(91\u4e00x)/3
\u6839\u636e\u9898\u610f\u5f97
(91\u4e00x)\u4e00x=2x\u4e00(91\u4e00x)/3
\u89e3\u4e4b\u5f97
x=28
100+11=111
111/3=37
爸爸现在是37岁
x+2x一11= 100。。x=37岁
绛旓細鐖哥埜x宀侊紝涓や汉鐩稿樊x-11宀侊紝鍒檟+2x-11=100锛屽緱x绛変簬37
绛旓細鏄惓鐞崇殑鐖哥埜锛屼粖骞磝宀侊紝閭ｄ箞杩囷紝杩囦簡x- 11锛岃繖涔堝骞寸殑鏃跺欙紝浠栦滑涓や釜浜虹殑宀佹暟鍔犺捣鏉ュ氨鏄100宀侊紝閭ｄ釜鏃跺欑惓鐞冲氨鏄痻宀侊紝鐖哥埜灏辨槸x+x- 11锛岄偅灏辨槸涓墄- 11=100锛屼笁x=111锛孹=37锛岀埜鐖镐粖骞37宀
绛旓細鎵浠ラ偅鏃鐖哥埜鐨宀佹暟灏辨槸32/(2/3)=48 灏辨槸5骞村悗 5鍊嶆椂,宸氨鏄叾涓殑4/5 鎵浠ラ偅鏃剁埜鐖哥殑宀佹暟灏辨槸32/(4/5)=40 灏辨槸3骞村墠
绛旓細鍋囪灏忔潕鐖哥埜骞撮緞鏄痻宀侊紝鍒欏皬鏉庨暱鍒扮埜鐖哥殑宀佹暟缁忓巻浜唜-11宀侊紝鎵浠ユ鏃鐖朵翰鐨勫勾榫搴旇鏄(x-11)+x宀侊紝鍐嶅姞涓婁粬姝ゆ椂鐨勫勾榫勬濂芥槸100宀侊紝鍗(x-11)+x+x=100锛岀畻寰梮=37锛屽嵆浠栫埜鐖稿簲璇ユ槸37宀
绛旓細璁剧惓鐞鐖哥埜浠婂勾x宀 x+x+x-11=100 x=37 鐞崇惓鐖哥埜浠婂勾37宀併
绛旓細鎹㈠彞璇濊灏辨槸鐖哥埜鐨勫勾榫勬槸濂冲効鐨5鍊嶃傜埜鐖稿拰濂冲効涓や釜浜虹殑骞撮緞宸槸涓嶄細鍙樼殑锛屽綋鐖哥埜鐨勫勾榫勬槸濂冲効鐨5鍊鐨勬椂鍊欙紝鐖哥埜鐨勫勾榫姣斿コ鍎跨殑骞撮緞澶4鍊嶏紝杩4鍊嶅氨鏄袱浜虹殑骞撮緞宸紝鎵浠ュ綋骞寸殑濂冲効骞撮緞鏄紙43-11锛壝凤紙5-1锛=8宀侊紝浠婂勾濂冲効11宀侊紝鎵浠ユ槸11-8=3骞村墠濂冲効鐨勫勾榫勬槸鐖哥埜鐨20%銆
绛旓細浣犺繖涓棶棰橀棶鐨勩傛寜鐓т腑鍥芥儏鍐碉紝鏍囧噯濠氳偛骞撮緞銆傜敺鎬у簲璇鍦22-25宀併備絾鏄篃鏈夋棭濠氱殑銆傝繖涓氨娌℃湁鍔炴硶璇翠簡銆傛渶璧风爜鐖哥埜搴旇鏄湪31宀佸埌36宀併傝嚦浜庢洿澶т篃鏄湁鍙兘鐨勶紝鑰屼笖宸茬粡涓嶅ソ璇翠簡銆
绛旓細铏界劧璇村コ鍎挎槸鐖朵翰涓婅緢瀛愮殑灏忔琚勶紝寰堝濂冲効浼氫笌鐖朵翰鐨鍏崇郴闈炲父寰楀ソ锛屼絾鏄敺濂宠繕鏄湁鍒殑锛屽挨鍏舵槸濂冲効鍒浜嗕竴瀹鐨勫勾榫涔嬪悗锛屽ス鏄繀椤昏鏄庣櫧杩欎釜閬撶悊鐨勩傚嵆渚挎槸鑷繁鐨勭埗浜蹭篃涓嶈兘澶熶笌濂冲効澶繃浜茶繎锛屾垜璁や负鍦ㄥコ鍎10宀佷互鍚庡氨搴旇涓庣埗浜蹭繚鎸佽窛绂讳簡锛屽洜涓洪偅涓鏃跺瀛╁瓙鐨勮韩浣撳凡缁忓紑濮嬪彂鑲蹭簡銆傚鏋滆濂硅繕鏄笌鐖朵翰涓炬...
绛旓細鎴戜滑鍙互璁＄畻鍑5骞村悗濂冲効鐨勫勾榫勶紝杩涜屽緱鍑哄ス浠幇鍦ㄧ殑骞撮緞銆傝В锛(45锛5脳2)梅(4锛1) = 55梅5 = 11锛堝瞾锛5骞村悗濂冲効鐨勫勾榫勬槸11宀侊紝鎵浠ヤ粖骞村コ鍎跨殑骞撮緞鏄11锛5锛6宀侊紝濡堝鐨勫勾榫勬槸45锛6锛39宀併傜瓟妗堬細1. 2骞村墠鐖哥埜鐨勫勾榫鏄コ鍎跨殑5鍊嶃2. 浠婂勾鍎垮瓙7宀併3. 濡堝浠婂勾39宀侊紝濂冲効6宀併
绛旓細浠婂勾鐖哥埜鐨勫勾榫鏄 43 宀侊紝濂冲効骞撮緞鐨3鍊嶆槸 11脳3 = 33 宀侊紝浜岃呯浉宸 43-33 = 10 宀侊紱姣忚繃1骞达紝鐖哥埜鐨勫勾榫勫鍔 1 宀侊紝濂冲効骞撮緞鐨3鍊嶅鍔 3 宀侊紝鍗筹細姣忓勾濂冲効骞撮緞鐨3鍊嶆瘮鐖哥埜鐨勫勾榫勫鍔犵殑宀佹暟澶 3-1 = 2 宀侊紝鎵浠ワ紝闇瑕佺粡杩 10梅2 = 5 骞达紝鐖哥埜鐨勭殑骞撮緞鏄コ鍎跨殑3鍊嶃傜涓闂槸灏...
